Furnace-roof.



E. SLICK.

FURNACE ROOF.

APPLICATION FILED NOV. 29, 1913.

Patented Sept. 1, 1914.

2 SHEETSSHEET 1..

W b QM Q N\ U n W n m n ILRH! III]: W I m u t y: N! J a i! w m W Ni m T m m B W s u u s M an FA, 4 n i INVENTOR E. E. SLICK.

FURNACE ROOF.

APPLICATION FILED NOV. 29, 1913.

Patented Sept. 1, 1914.

2 SHEETS-SHEET 2 WITNESSES To all whom it may concern:

UNITED STATES PATENT OFFICE.

EDWIN E. SLICK, or JOHNSTOWN; PENNSYLVANIA.

FURNACE-ROOF...

Be it known that I, EDWIN E. SLICK, a

citizen of the United States, residing at .Johnstown, 'in the county of Cambria and State of Pennsylvania, have invented a new and useful Improvement'in Furnace-Roofs,

of which the following is a full, clear, and

' exact description, reference being had to' the 'partial end elevation of the hollow girders;

Fig. 5 is an enlarged'view similar to Fig. 3,

- showing .-the keyed-in repair bricks; and

Figs. 6, 7, 8, 9, 10 and 11 are partial cross sections showing modified forms of the girden.

My invention relates to furnace roofs,

particularly those employed for metallurgical purposes, and is designed to provide anew and improved roof structure, in which the refractory bricks or blocks are carried on hollow 'water-cooled girders extending up between and separating the upper parts of the rows of bricks. Heretofore, it has been proposed to support theseroofs on water-cooled pipes extending between the bricks, bjut in such case, the pipes have 1nsufiicient structural strength as girders, and are not wholly successful. 1

According to the, present invention, I form a series of girders with side shoulders or enlargements entering recesses in the bricks or blocks, these girders extending up between the rows of blocks and having hollow water-cooled portions." These watercooled girders afford a strong and efficient structure for carrying the loads; and may be cheaply made and installed. Such girders may bemade in any desirable manner, as by pressing up the steel plates into girder form having a hollow space for conta1ning water, by welding .or otherwise fastening a pipe to a structural girder, etc.

' shapes, having enlarged In the form of Figs. 1 to 5, inclusive, 2 represents girders formed of pressed steel lower portions forming side shoulders. 3, the upper meeting faces of the sheets being riveted together, as shown at 4. The bricks or blocks 5-"have suitable side recesses to receive the Specification of Letters Patent. Application filed November 29, 1913. SeriaLNo. 803,710.

Patented Sept. 1, 1914.

shoulders on the girders, and hung between the girders .in rows, as shown. The ends of .the girders preferably extend over and rest upon the side walls 6,6, and I preferably employ shoes 7, having flat lower faces ture work 8 of the side walls. These shoes or saddles are suitably shaped to receive the lower portions of the hollow girders,

and mayslide upon the side walls duringexpansion and contraction of the furnace. The ends of the hollow girders may be closed in any desirable manner, as for ex- .ample, by fitted end plates 9, which are welded in place. Each of these plates 9 is preferably provided with two screw-threaded holes, one near the top and the other near the bottom,and the inlet pipe 10 is screwed into one of the lower plug holes at one end,

and the outlet pipe 11 similarly screwed ,intothe upper hole at the opposite end. The holes not in use may be closed by screw plugs 12, which may be opened for cleani-Itig, changing the inlet water end for end,

To provide for repairing the bricks without dismantling the furnace, I preferably replace an injured or destroyed brick by" the three partial bricks a, b, 0, shown in Fig. 5; In these blocks, the outer parts are similar to the outer portions of one of theblocks regularly used, while theiniddle part 'b is key block which wedges the 1 other blocks sidewise uponthe supporting portions of the girders andholds the parts in place.

which rest upon the angles or other struc- Instead of pressingthe shape'ishown in.

Figs. 1 to 5, ,I may press-up other shapes for the girders, such as shown in Figs. 6 to 11, inclusive.v InzFig. 6, the girder 2 is formed by? doubling a sheet or plate on itself, leaving 'the, central portions spaced apart to receivewater,'the plate portions being fiattened together through i the rest of the height. Fig; 7 shows the same form as Fig.6, except that aifitting lin i's provi'ded= :for the" supply or outlet pipe. In the form of Fig. 8, the girder 2" gradually tapers from its lower end down to the upper par-' allel portions which'are riveted together;

and Fig. 9 shows a similar form 2, except that here the upper portions of the girder are shaped and welded together, instead of being fiat andthenriveted. In 10, I

show a form of girder comprising a tube 1 1, welded or otherwise secured to the lower flanges 15 of an I -beam 16. In this case,

- fect ofone the structural beam affords the desired strength as a girder, while the tube secured thereto acts as a conveyer of thecooling fluid. In Fig. 11, I show a form similar to Fig. 10, except that the girder 17 is formed 'of structural shapes, giving a built-up shape secured to the pipe.

The advantages of my invention will be obvious to those skilled in the art, since the roof is supported on a series of strong girders, while at the same time the girders are protected from overheating by a watercooled portion formed therein or secured thereto. A flat roof may thus be provided, giving a simple, strong and long lived structure.

. The supporting girders having watercooled portions are preferably of a depth considerably greater than their width to give thedesirable stiifness and strength for supporting the-roof sections. At the same time the water-cooled portions of these girders-afford an opportunity for a relatively large coolin surface, if desired, and .by combining t e girders and water-cooling parts I obtain a compact, simple and efiicient roof structure which avoids the necessity for separate or additional supports and affords a long life. 4

By reason of the large amount of cooled surfaces provided b my construction, the region ofcooliug e ect;radiates in all di rections'lfrom sa d surfaces insuch a way" kept cool, and it that the entire roof is should also ,be noted that I arrange the cooling supports comparatively close together so that the range of thecooling efipe extends into the coolin zone of the a structure will hex-fully supported, maintainedin position and protected.

The bricks or blocks may be changed in shape, the girders, having the water-cooled lspaces may be. varied widely, and other frommyiginvention.

1. A furnace roof, compr sing-a series of changes, may. ,be made without departing j girders having. lower hollow water cooled p ns, therethrough and rows of bricks or blocks hung onthe water cooled portions of the ported thereby,

connections for circulating watergirders, said above the bricks and blocks; substantially as described.

2. A furnace roof, comprising a series of parallel horizontally extending transverse girders of greater depth than width, having lower hollow water cooled portions, connectionsv for circulating water therethrough, and rows of bricks or blocks supported upon the water cooled. portions of which girders project upwardly the girders, abovethe tops of, the blocks; substantially as described.

3. A furnace roof, comprising a series of transverse girders resting on the side walls and formed of steel shapes of greater depth than width, said girders having lower hollow water cooled portions, connections for circulating water throughsaid water cooled portions, and rows of bricks or blocks sup ported 'on the water cooled portions of the girders, which girders project upwardly above the-tops of blocks and separate their upper portions; substantially as described.

girders projecting upwardly 4. A'furnace roof having a series of girders with solid upper portions and water cooling cavities in their lower portions, and

rows of bricks supported on each side of'the lower portion, substantially as described.

.5. A u jter-cooled girders, each of a depth considerably greater than its width, and provided .With projections on the-lower portions of the ,sides thereof with rows of bricks orblocks supportedby fsaid projections,sub-..

stantially as described.

1 ,6. "A furnace roof comprising hollow war v ter-cooled girders, each of a depth considjoming plpes, so that the roof erably'greater than its width and provided with-projections on the lower portions of the sidesthereof,-said girders being spaced closely together so that the cooling zone of each projects into that of the adjacent girders, with rows of bricks or blocks'supsubstantially as described. In testimony whereof, I have hereunto set my hand.' I EDWIN E. SLICK.

Witnesses:

A. D x TITTLE, RENE MCWILLIAMS.

rnace roof comprising hollow wa- 4 I 

